<template>
  <div :class="animate" :style="{ height: height, width: width}" :id="chartOption.bindingDiv" >
    
      <a v-if="this.chartOption.type=='label'" :href="href" :target="target" ref="hyper" @mouseenter="visible" @mouseleave="invisible" :style="normalTextStyle">{{context}}</a>
      <a v-if="this.chartOption.type=='img'" :href="href" :target="target" ref="hyper">
        <img :src="imgSrc" alt="" :style="imgStyle">
      </a>
      
  
  </div>
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from '@/views/dashboard/mixins/resize'

import '../../animate/animate.css'

import {parseQueryString, fIsUrL} from '../../util/urlUtil'
import { chartApiBar } from "@/api/tool/datav/chartApi";
import { websocketCommand } from "../../util/websocket.js";

const animationDuration = 6000;

export default {
  props: {
    className: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "100%",
    },
    chartOption: {
      type: Object,
    },
    zIndex:{
      type:Number
    }
  },
  data() {
    return {
      basePath: process.env.VUE_APP_BASE_API,
      chart: null,
      dataOption: this.chartOption,
      imgSrc: this.chartOption.img.src,
      context:"",
      timer: "",
      wsObj: null,
      wsFlag: false,
      wsTimer: "",
      wsValue: null,
      animate: this.className
    };
  },
  watch: {
    width() {
      
    },
    height() {
      
    },
    chartOption: {
      deep: true,
      handler(newVal) {
        this.setOptions(JSON.parse(JSON.stringify(newVal)));
      }
    },
    "chartOption.timeout": {
      handler() {
        this.chart = null;
        this.initChart();
      }
    },
    "chartOption.dataSourceType": {
      handler(value) {
        //切换数据源重新连接
        if (value !== "websocket") {
          this.wsFlag = false;
          //每次切换数据源恢复原来动画
          this.animate = this.className;
        }
        if (value !== "url") {
          clearTimeout(this.timer);
        } 
      }
    },
    "chartOption.interfaceKey": {
      handler(newValue, oldValue) {
        //初始化不创建连接，改变接口地址重新创建
        if (oldValue !== undefined && oldValue != "") {
          this.wsValue = null;
          this.closeWs();
          this.createWs();
          this.animate = this.className;
        }
      }
    },
    wsFlag: {
      handler(value) {
        if (!value) {
          this.wsValue = null;
          this.closeWs();
        }
      }
    },
    className: {
      handler(value) {
        this.animate = value;
      }
    }
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart = null;
    clearTimeout(this.timer);
    if (this.wsFlag) {
      this.closeWs();
    }
  },
  computed:{
    normalTextStyle(){
      const style = {color:this.chartOption.label.linkColor,fontSize:this.chartOption.label.fontSize + "px",fontFamily:this.chartOption.label.fontFamily,
        position:'absolute',cursor:'pointer',userSelect:'none',textDecoration:this.chartOption.label.decoration,"zIndex":this.zIndex,fontWeight:this.chartOption.fontWeight}
      return style
    },
    href(){
      return this.chartOption.href
    },
    target(){
      return this.chartOption.target
    },
    imgStyle(){
      return {width:this.chartOption.img.width+'px',height:this.chartOption.img.height+'px'}
    }
  },
  methods: {
    initChart() {
      //判断是否开启定时器，当是访问url接口时候并且timeout不为0时候开启定时器
      if (this.timer != "") {
        clearTimeout(this.timer);
      }
      if (
        (this.chartOption.dataSourceType == 'url' || this.chartOption.dataSourceType == 'database') &&
        this.chartOption.timeout > 0
      ) {
        let timerTask = () => {
          this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
          this.timer = setTimeout(() => {
           
            timerTask();
          }, this.chartOption.timeout);
        };

        timerTask();
      }else{
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
      
    },
    setOptions: async function(dataOption) {
      let resultData = "";
      if(dataOption.type=='label'){
         resultData = dataOption.label.context;
       }else{
         if(dataOption.img.src.indexOf(this.basePath) < 0){
            resultData = this.basePath+dataOption.img.src
         }else{
           resultData = dataOption.img.src
         }
        
       }

      if (dataOption.dataSourceType == "url" || dataOption.isStaticData == false) {
        let paramJson = parseQueryString(dataOption.requestParameters);

        let interfaceURL = dataOption.interfaceURL;

        resultData = await chartApiBar(
          dataOption.requestMethod,
          interfaceURL,
          paramJson,
          dataOption.token
        );

      } else if (dataOption.dataSourceType == "database") {
      } else if (dataOption.dataSourceType == "websocket") {
        if (
          dataOption.interfaceKey != undefined &&
          dataOption.interfaceKey != ""
        ) {
          if (!this.wsFlag) {
            this.wsFlag = true;
            this.wsValue = null;
            this.createWs();
          }
          if (this.wsValue != null) {
            resultData = this.wsValue;
          }
        }
      }
      //数据处理
       if(dataOption.customData != undefined && dataOption.customData != ""){
        
        try {
          resultData = (
          
            //里面为要处理的代码块
          eval(dataOption.customData) 
          
          )(
            resultData,
            this.$refs.text
          );
        } catch (error) {
          console.log(error)
        }
        
       }
        //交互组件配置
       if(dataOption.interactData != undefined && dataOption.interactData != ""){
        
        try {
          resultData = (
          
            //里面为要处理的代码块
          eval(dataOption.interactData) 
          
          )(
            resultData,
            this.$refs.text
          );
        } catch (error) {
          console.log(error)
        }
        
       }


       if(dataOption.type=='label'){
         this.context = resultData
       }else{
        this.imgSrc = resultData;
       }


    },
    //  ws连接成功，后台返回的ws数据
    receiveMsg(e) {
      if (e.action == "chat") {
        // console.log('服务端推送',e);
        this.wsValue = e.result;
        this.setOptions(JSON.parse(JSON.stringify(this.chartOption)));
      }
    },
    // 建立连接、发起ws请求，以心跳方式，向服务端发送数据
    createWs() {
      this.wsObj = new WebSocket(process.env.VUE_APP_WEBSOCKET);
      // 若为对象类型，以回调方式发送
      websocketCommand(
        this.wsObj,
        "create",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
    },
    // 断网重连，需要处理的逻辑
    reconnectWs() {
      if (this.wsObj) {
        console.log("%c websocket_reconnect", "color:blue");
        this.createWs();
      }
    },
    // 以回调方式向服务端发送(对象类型的)心跳
    sendHeartBeat() {
      if (this.wsTimer != "") {
        clearTimeout(this.wsTimer);
      }

      let wsTimerTask = () => {
        console.log("发送心跳", "ping");
        let obj = { action: "keep", key: this.chartOption.interfaceKey };
        this.wsObj.send(JSON.stringify(obj));
        this.wsTimer = setTimeout(() => {
          wsTimerTask();
        }, parseInt(process.env.VUE_APP_WEBSOCKET_TIMEOUT));
        this.wsWarning();
      };

      wsTimerTask();
    },
    wsWarning() {
      //如果断开连接则显示组件警告动画并清除计数器
      if (this.wsObj.readyState == 3) {
        this.animate = "warning";
        clearTimeout(this.wsTimer);
      }
    },
    closeWs() {
      clearTimeout(this.wsTimer);
      websocketCommand(
        this.wsObj,
        "close",
        5000,
        this.chartOption.interfaceKey,
        this.sendHeartBeat,
        this.receiveMsg,
        this.reconnectWs,
        this.wsWarning
      );
      this.wsObj = null;
    },
    visible:function(){
      let style = this.$refs.hyper.style;
      style.color = this.chartOption.label.hoverColor
    },
    invisible:function(){
      let style = this.$refs.hyper.style;
      style.color = this.chartOption.label.linkColor
    }
  }
};
</script>
